268 Scientific Intelligence. 
2. Manganocalcite of Brerrnavrt, (L’Institut, No. 726, from Pog- 
gend. Ann., Iviii, 511.)—This mineral from Schemnitz, contains car- 
bonic acid and protoxyd of manganese 67°48, carbonic ren and lime 
8°81, magnesia 9°97, carbonic acid and protoxyd of iron 
3. Stiblite, a New Mineral; by MM. Brum and Detrss, (D'lustitut, 
No. 726. )—Stiblite i is an ore of antimony frem Zamara in Spain, Fel- 
sobanya and Kremnitz in Hungary, in Bavaria, and Mexico. Analysis 
shows that it is an antimonate of antimony, affording the formula 
SbO,+S8b0,-+2HO. The name alludes to i antimony 
(sibium, It was first mistaken for o oxyd of a 
4. Hydrosilicate of Alumina, allied to cen (Bull Soc. Geol. 
de Fr rance, ii ser., iv, p. 464.)—A mineral of this kind from Montmo- 
rillon (Vienna) is amorphous and fragile ; its color is rose ordi It falls 
to pieces readily in water, but does not become plastic. 
M. Damour obtained for its composition, as the mean of three analy- 
ses, silica 50-04, alumina 20-16, peroxyd of iron 0°68, lime 1:46, 
magnesia 0-23, potash 1-27, water 26°, 99°84, leading to the general 
formula rS?-L4RSi2 28H. 
A halloysite from the pumaceous tufa of Wiles. afforded M. Lauvage, 
silica 31-6, alumina 23:2, magnesia and alkali 3:20, quartz 29°30, 
water 12-70, affording the formula Si? Al? Aq?. 
5. Sul phuret of Cobalt; (Chem. Gaz., No. 77, 23.)—A pr 
sulphuret of cobalt has been found near EAS: in sys ech in 
sper pnous masses. The color is steel gray. It consists of cobalt 
eg a Iphur 35° 26, 
Gothard, mosinies with realgar, aa bende, and pyrites. 
7. Smelite; by M. Guocxer, (Jour. f . Prakt. Chem., xxxv, 39.)— 
Smelite is an amor rphous_ grayish white mineral, allied to halloysite. 
It is a hydrous silicate of alumina, containing silica 50-0, alumina 32°0, 
soda 2-0, peroxyd of iron 2-0, water 13:9 — 99-9 3 “168, 
The name is from the Giick ournky, soap. It occurs in a trachytic 
porphyry near Tekibanga in Hunga y: 
8. Coal in the East Indies ; (L’Institut, No. 726.)—Coal has been 
found by a Siamese of Penang, on the south side of the island of Junk 
Ceylon, well known for its tin. The bed is three feet thick. ‘The coal 
is of a black or brownish black color, burns with a clear flame, and 
seems to be soy bituminous. 
9. Researches among the Protozoic and ee Rocks of 
Central Kentucky, made during the summer of 1846; by D. D. OWEN, 
a2 and J, Gg Res woop, M.D. 12 pp. 8vo, with a plate, St. Louis. 
—The rs have detected the “cliff” formation of = west 
lta Silurian) i in ‘Davi idson and Sumner counties, Tennessee. But 
